能量色散X荧光光谱法对化妆品中汞快速检测的初步探讨

Preliminary Discussion on Rapid Determination of Mercury in Cosmetics by EDX-ray Fluorescence Spectrometry

采用能量色散X荧光光谱法建立了乳状液化妆品中汞的快速检测方法。方法:空白基质选用不含汞的乳状液化妆品,配制出不同浓度汞的系列标准样品进行测定并建立标准曲线。结果:汞含量在0.5~100 mg·kg-1之间呈良好的线性关系,Y=0.9930X+0.8983,r=0.9860;精密度试验的RSD(n=6)在1.5%~2.9%之间;回收率在93.53%~101.14%之间;检出限为0.2 mg·kg-1。结论:本方法简便快速,适合乳状液化妆品中汞的快速测定。

A method of rapid determination of Hg in cosmetics by EDX-ray fluorescence spectrometry. Methods：Blank matrix was selected from mercury-free paste cosmetics, prepared a series of standard samples of different concentrations of mercury, into the machine directly measured, based on the data obtained standard curve. Results： The linearity of mercury content in the range of 0.5-100 mg·kg-1 was good, Y = 0.9930X＋0.8983 r=0.9860; RSD （n=6） of precision test was between 1.5 % and 2.9 % The rate of detection is 0.2 mg·kg-1 in the range of 93.53 %-101.14 %. Conclusion： The method is simple and rapid, which can be used for the rapid determination of Hg elements in cosmetics.